diff --git a/Cargo.lock b/Cargo.lock
index 484656c..0ebf25d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -626,9 +626,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro-hack"
-version = "0.5.14"
+version = "0.5.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcfdefadc3d57ca21cf17990a28ef4c0f7c61383a28cb7604cf4a18e6ede1420"
+checksum = "99c605b9a0adc77b7211c6b1f722dcb613d68d66859a44f3d485a6da332b0598"
 
 [[package]]
 name = "proc-macro2"